Vox always opens to "Internal Speakers" setting no matter the fact it was set to AirPort Express in the window or in the preferences.
Also, Vox crashes quite often when set in AirPort Express.
Is it a network or a Vox problem? Thank you
Does VOX play with the output you've chosen after you started it?
Please contact our tech. support in direct: https://vox.rocks/support
Sure it will help to figure this case out.
The discussion has been re-opened.